Stego Wrap Below Slab Concrete Vapor Barrier Roll
  • Stego Wrap Below Slab Concrete Vapor Barrier Roll
  • Stego Wrap installation within a warehouse
  • Stego Wrap installation with concrete screed equipment
  • Stego Wrap Installation with Stego Tape at seams
  • Aerial view of Stego Wrap installation with Stego Tape at seams
  • Aerial view of Stego Wrap installation at unfinished construction site

Stego® Wrap Vapor Barrier (15-mil)

The Most Specified Below-Slab Vapor Barrier in North America

Stego Wrap 15-Mil Vapor Barrier is made from a proprietary blend of prime virgin resins and additives, a combination lending to great value and effectiveness in protecting the concrete slab from moisture intrusion.

Backed by unparalleled project and educational support, Stego 15-Mil Vapor Barrier has not only become the flagship product of Stego Industries, but an industry leader as well. Design professionals, contractors and homeowners alike have come to rely on Stego Wrap 15-Mil Vapor Barrier to protect their most critical projects. A 20+ year track record of success and a first-of-its-kind Life of the Building Warranty, make Stego Wrap an industry-wide trusted product. 

Its many features include:

  • Extremely low permeability to effectively prevent against moisture vapor and soil gas transmission
  • Aids in protection against flooring failures
  • 14' wide rolls minimize seams
  • Exceeds ASTM E1745 Class A, B & C
  • Made in the USA


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New call-to-actionInfiltration of moisture from the ground through concrete slabs is a major building defect liability. Stego Wrap Vapor Barrier 15-Mil is designed not only for effectiveness but also for longevity. This vapor barrier is manufactured with only the highest grade of prime, virgin, polyolefin resins which allow this product to greatly resist degradation. This product is also engineered for superior strength and durability, never flakes and is resistant to tears, snags, punctures, and cracks.
Stego Wrap 15-Mil Vapor Barrier has an extremely low permeance rating, which helps mitigate the risk of water vapor accumulation and the transmission of various soil gases. This helps to maintain the integrity of the building envelope and promotes indoor air quality by avoiding serious moisture-related issues.

Engineered Performance – Life of the Building Protection
Stego offers the first-of-its-kind warranty for its line of vapor barriers and retarders. The Stego Life of the Building Warranty reinforces its 20+ year track record without a single claim of product failures, making Stego the construction industry leader in below-slab barriers. The warranty matches the unparalleled Stego Installation Support - a FREE SERVICE designed to help achieve an effective installation and add value for project teams.

APPLICABLE STANDARDS American Society for Testing & Materials (ASTM):  

    • ASTM E1745: Standard Specification for Water Vapor Retarders Used in Contact with Soil or Granular Fill Under Concrete Slabs
    • ASTM F1249: Test Method for Water Vapor Transmission Rate through Plastic Film and Sheeting using a Modulated Infrared Sensor
    • ASTM D1709: Test Methods for Impact Resistance of Plastic Film by Free-Falling Dart Method
    • ASTM D882: Test Method for Tensile Properties of Thin Plastic Sheeting
    • ASTM E154: Standard Test Methods for Water Vapor Retarders used in Contact with Earth under Concrete Slabs, on Walls, or as Ground Cover

Physical Properties:

    • Water Vapor Permeance: 0.0086 perms
    • Puncture Resistance: 2,266 grams
    • Tensile Strength: 70.6 lbf/in
    • Thickness: 15-mil
    • Dimensions: 14' x 140' (1,960 ft2)
    • Roll Weight: 147 lbs

Additional Benefits:

    • Resists vapor diffusion and moisture intrusion
    • Exceptional durability
    • Resists deterioration
    • Simple, dependable installation
    • Reduces migration of soil gases, such as methane or radon
    • Available nationwide
    • Life of the Building Warranty
    • Stego Installation Support

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Stego has the accessories you need to complete an ASTM E1643-compliant installation. Stego Tape, Stego Mastic, Stego Crete Claw Tape and StegoTack Tape enable efficient vapor barrier installations, saving time and resources.


Stego Tape

A low permeance tape designed for use...

Stego Mastic

Stego Mastic

A liquid applied vapor retardant membrane...


Stego Crete Claw Tape

A multi-layered tape...



A double-sided adhesive strip used to bond...

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